William e



(No Model.)

W. R. PATTERSON.

JOINT ECE ELECTRIC ARC LICHT CABLES.

Patented Feb. 10, 1885.

N. PETERS. Pholmh UNITED STATES PATENT OFFICE.

WILLIAM It. PATTERSON, OE CHICAGO, ILLINOIS, ASSIGNOR TO THE VESTERN ELECTRIC COMPANY, OF SAME PLACE.

JOINT FOR ELECTRIC-ARC-'LIGHT CABLES.

SPECIFICATION forming part of Letters Patent No. 311,914, dated February 10, 1885.

Application filed July 18, 1884. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM R. PATTER- sON, a citizen of the United States, residing at Chicago, inthe county of Cook and State (if-Illinois, have invented a certain new and useful Improvement in Joints for Electric-Arc- Light Cables, (Case 40,) ot' which the following is afull, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specitication.

In an application led herewith (Case 35) I have described and claimed a cable consisting of two concentric conductors and means for uniting the sections ot" such a cable together, so as to afford facilities for making branch connections with the different condnctors.

My improvement herein consists in certain modifications in the means tor connecting` the sections together, in order that four ends of the conductors may be taken out at the joint,

so as to atord facilities for connecting` with are lamps which are placed one after another in the circuit and not in multiple arc, as is the case in incandescent systems of lighting.

Myinvention is illustrated in the drawings, in which Figure 1 is a sectional view of cable embodying my improvements. Fig. 2 is a top View of a portion thereof. Fig. 3 is a transverse vertical central sectional view through thejoint.

Like parts are indicated by similar letters of reference in the ditt'erent figures.

The conductor c is insulated from the conductor b by means ofthe strips c, which may be of wood or other insulating material. The rings or strips d, also preferably of wood, serve to insulate the conductor b from the iron pipe e. The interstices between the strips and rings may be filled with insulating material, like asphalt, which may be forced in The bushings f g should be of such size hot.

as may be required to fit the pipe of the cable. The T-coupling Z1. must be large enough to give room for the ends of the conductors and their connections. The piecesik are screwed, respectively, to the opposing ends of the outer conductor, b, and are connected together by the cross-piece Z, which is provided with the opening Z', as shown. The ends ot' the cenA tral conductor, a, are brought th rough the openings in the pieces t' 7c and bent up and connected by the crosspiece m, as shown. By simply removing the crosspieces Z and m the four ends ot` t-he two conductors are made accessible, so that connection may be made with the arc lamps in any way desired.

It is evident that either of the cross-pieces may be removed without disturbing the other, and a lamp may be connected with the conductora through the opening in the upper cross-piece.

The outletin the T-piece h should be plugged when connections are made with the conductors at the joint.

I claiml. The combination, with the concentric conductors c and b ot' an electricarc-light cable, of the pieces i and 7c, screwed to the opposing ends ofthe tube ofthe outer conductor, and the ends ofthe central conductor project1 ing through openings in said pieces, respectivcly, and the removable cross-pieces Z and m, substantially as and for the purpose specied.

2. The combination, with the conductor a, of the outer conductor, b, and the pieces i k, provided with openings for the ends of conductor a, substantially as and for the purpose specilied.

In witness whereof I hereunto subscribe my naine this 15th day of July, A. D. 1884..

W'ILLIAM It. PATTERSON.

IVitnesses:

GEoEGE P. BARTON, H. FRANKFURTER. 

